BOSE 402 SERIES II Schematic
402
®
Series II Loudspeaker
©2009 Bose Corporation
Service Manual
Reference Number 260431-SM Rev. 02
Electronic copy only
External dimensions:
CONTENTS
Specifications ....................................................................................................................................1
Disassembly/Assembly Procedures ........................................................................................... 2-3
Figure 1. Schematic Diagram ..............................................................................................................3
Test Procedures ................................................................................................................................4
Main Part List..................................................................................................................................... 5
Figure 2. Exploded View ......................................................................................................................5
Crossover PCB Part List ..................................................................................................................6
Figure 3. Crossover PCB Layout ........................................................................................................6
Packaging Part List ...........................................................................................................................6
Figure 4. Packaging View ....................................................................................................................6
WARRANTY
5 year limited warranty
PROPRIETARY INFORMATION
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION
OF BOSE
ONLY FOR THE PURPOSE OF SERVICING THE IDENTIFIED
BOSE PRODUCT BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT
BE REPRODUCED OR USED FOR ANY OTHER PURPOSE.
®
CORPORATION WHICH IS BEING FURNISHED
SPECIFICATIONS
Single speaker: 23.3" H x 8.2" W x 7.8" D (59.2 x 20.8 x 19.8)cm
Packed system: 27.0" H x 12.0" W x 11.0" D (68.6 x 30.5 x 27.9)cm
Weight:
Single speaker: 17.5 lbs (7.94 kg)
Packed system: 21.3 lbs (9.66 kg)
Transducer:
Internal cabinet volume:
Port:
Type: Two rectangular ports located at the top and bottom.
Total port area: 8.84 sq. in. (57 sq. cm)
Port length: 3.23" (8.2cm)
Resonance frequency: 90 Hz
Impedance:
Power handling:
Sensitivity:
Four 4.5" environmental drivers per enclosure
1067.9 cu. In. (17.5 liters)
8 ± 2 Ohm
120W continuous per IEC-268-5
90 dB SPL, 1W, 1m
2
MAIN PART LIST
Item
Description Part Number Qty Note
Number
1 GRILLE, BLACK
GRILLE, ARCTIC WHITE
GRILLE, PRO GRAY
252380-001
252380-002
252380-004
1
2 SCREW, TAPP, 8 -15, HEXW, SLOT 290290-12 14
3 DRIVER ASSEMBLY, 4.5" 291020-001 4 1
4 GASKET, DRIVE R, 4. 5 " 128407 4
5 FOAM, ACOUSTIC, 19.75"x7"x1 120357 1
6 CLIP, TINNERMAN 187943 2
7 CROSSOVER ASSEMBLY 291042-001 1
8 CONN, SPEA KON, PANEL MOU NT 258213-002 2
9 SCREW, THUM B, M8x1.25x25mm 137050 2
10 CONN, FUSE CLIP, 1 POS, FEMAL E 121112 2
11 SCREW, TAPP, 6 - 20x.5, PAN, XR 290296-08 2
12 TAPE, FOAM 257555 1
13 NUT, J-TYPE, 8-32 109481 12
14 INSERT, KNURLED 290293-01 4
15 DEFLECTOR 126973-1 1
16 SCREW, TAPP, 6- 13x.625, PAN 290294-10 4
17 NAME PLATE, LOGO, BLACK
NAME PLATE, LOGO, WHITE
254458-001
254458-002
1
Note: When ordering a d river, also order a driver gasket.
17
7
2
2x
2x
2x
6
5
8
10
2x
9
12x
11
4x
4
3
2x
2
2x
1
12
12x
4x
13
14
15
16
4x
Figure 1. Exploded View
3
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